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A pure semiconductor...

A pure semiconductor

A

an extrinsic semiconductor

B

an intrinsic semiconductor

C

p-type semiconductor

D

n-type semiconductor

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • The process of adding impurities to the pure semiconductor is called

    A
    Drouping
    B
    Drooping
    C
    Doping
    D
    None of these

  • In extrinsic P and N - type, semiconductor materials, the ratio of the impurity atoms to the pure semiconductor atoms is about

    A
    1
    B
    `10^(-1)`
    C
    `10^(-4)`
    D
    `10^(-7)`

  • A: When a pure semiconductor is doped with a pentavalent impurity, the number of conduction electrons is increased while the number of holes is decreased R: Some of the holes get recombined with the conduction electrons as the concentration of the conduction electrons is increased.

    A
    If both Assertion & Reason are true and the reason is the not the correct explanation of the assertion , then mark (1)
    B
    if both Assertion & Reason are true but the reason is not the correct explanation of the assertion ,then mark (2)
    C
    If Assertion is true statement but reason is false, then mark (3).
    D
    If both Assertion and reason are false statements, then mark (4)

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    The diagram shows a piece of pure semiconductors S in series with a variable resistor R and a source of constant voltage V. Would you increase or decrease the value of R to keep the reading of ammeter A constant, when semiconductor S is heated? Give reason.

    In pure semiconductor, the number of conduction electrons is 6 xx 10^18 per cubic metre. How many holes are there in a sample of size 1 cm x 1 cm x 1 mm?

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